PYSEC-2026-226

At a glance

Published: 2026-06-22 23:16 UTC
Updated: 2026-06-26 00:00 UTC
CVE: CVE-2026-48746
Aliases: GHSA-94f4-hr76-p5j6
CVSS_V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Description

vLLM is an inference and serving engine for large language models (LLMs). From 0.3.0 until 0.22.0, a vulnerability in ASGI web servers and starlette's trust on those web servers enables an authentication bypass of the OpenAI API AuthenticationMiddleware. It allows to use the API without providing the configured VLLM_API_KEY or --api-key. This vulnerability is fixed in 0.22.0.

Affected packages

Package	Versions
PyPI · vllm	introduced 0.3.0, fixed 0.22.0

References

https://github.com/vllm-project/vllm/security/advisories/GHSA-94f4-hr76-p5j6 ADVISORY
https://x41-dsec.de/lab/advisories/x41-2026-002-starlette ADVISORY
https://github.com/vllm-project/vllm/pull/43426 REPORT

Sources

Source	Licence
OSV.dev	CC-BY 4.0 — PyPA Advisory Database